SOLUTION: A baker mixes a 21-pound batch of dough that contains 3 pounds of sugar. Approximately how many pounds of sugar must be added for the dough to contain 27% sugar? A. 2.7 B.

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Question 843966: A baker mixes a 21-pound batch of dough that contains 3 pounds of sugar. Approximately how many pounds of sugar must be added for the dough to contain 27% sugar?

A. 2.7
B. 3.1
C. 3.6
D. 4.2
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = pounds of sugar to be added
+%28+3+%2B+x+%29+%2F+%28+21+%2B+x+%29+=+.27+
+3+%2B+x+=+.27%2A%28+21+%2B+x+%29+
+3+%2B+x+=+5.67+%2B+.27x+
+.73x+=+2.67+
+x+=+3.658+
(C) 3.6 is the closest answer